Tenon



C. J. WOOD.

TENON.

APPLICAUON FILED MAY 12. 1919.

Patent/ed Feb. 22, 19210 v ("3140mm Casimir J. Wood. 4

ww w UNITED STATES CASIMIR J. WOOD, OF SAN FRANCISCO, CALIFORNIA.

v 'rnnon.

Specification of Letters Patent. Patenta Feb, 22, 1921,

Application filed m 12, 1919. Serial No. 296,673.

To all whom it may concern:

Be it known that I, CAsIMIR J. W001), a citizen of the United States, residing at San Francisco, in the county of San Francisco and State of California, have invented certain new and useful Improvements in Tenons, of which the following is a specification.

My invention is a tenon particularly useful in wooden pipe joints.

My invention is illustrated in the accompanying drawing which forms a part of this specification and the appended claims.

Referring to the drawing:

Figure l is a side elevation of a wooden pipe section with a tenon on the end thereof embodying my invention.

Fig. 2 is a longitudinal section of said pipe section. V

Fig. 3 is a longitudinal section of a pipe I joint embodying my invention.

Fig. 4 is a fragmentary cross section-of the pipe embodying my invention.

In the drawing 1 indicates a section of a wooden pipe on the end of which is formed an annular tenon 2. The pipe section is formed by a plurality of interengaging tongue-and-grooved boards 3. A wire 4 is wrapped around the pipe up to the tenon 2, compressing the boards tightly together at their joints up to the tenon, the boards flaring outwardly in the tenon'to the end *thereof. The outer surface of the tenon is cut conical shape, diverging to the end of the tenon parallel to the inner surface thereof. A shoulder 5 is formed between the tenon 2 and the outer surface of the pipe section.

When the tenons on the ends of two pipe sections are introduced into a joint sleeve 6, they are compressed straight, the boards 3 in the tenons being compressedtightly together at their joints, so that the outer surface of the tenons fit the inner surface of the sleeve tightly, and the inner surface of the tenons extends parallel to the inner surface of the pipe, as shown in Fig. 3, and not inwardly beyond the inner surface of the pipe in the path of the water flowing through the pipe.

A pipe joint including my'tenon is most effective against leakage.

Having describedrmy invention, I claim:

1 In a pipe section of compressible material, a tenon on the end of said section of conical formation diverging outwardly toward its outer end.

2; A pipe section composed of a plurality of longitudinally disposed strips arranged 'side by side and bound together by external means, a tenon integral on the end of said pipe section'and free of said binding means, 7

said tenon being of a less diameter than the pipe section and of conical formation diverging outwardly-toward the end thereof. 3. p1pe composedof a plurality of longitudmally disposed strips arranged sideby side and bound together by external means, a I

tenon on one end of said pipe sections formed by the projecting ends of said strips, being free of said binding means, the ends of the strip forming the tenon being slightlyseparated at their contiguous edges and 1ncreasing toward their outer ends,.whereby the tenon takes a conical formation divergends of the strips forming the tenons being slightly separated at their contiguous edges and adjacent its outer end, whereby the,

tenons assume a slightly conical formation diverging outwardly toward their ends, and

a sleeve in which said adjacent tenons are inserted and which brings the separated edges of the tenon together, thereby form- I ing a tight joint.

In testimony whereof I aflix my signature.

' CASIMIR J. WOOD. I 

